In trying to avoid creating temporary files to store data which could just be kept in variables it is possible in bash to use the following syntax of process substitution and input redirection in order to pass data onto other commands:

{ read -d '' result ; }< <( curl http://myjsonapi.com/page1 | jq '.[0].somedatapoint' ) && anothercommand <<< "$result"

unfortunately this syntax isn't supported in 'sh' and an unexpected redirect error is received.
Is it possible to use bash in the docker containers instead.